利用井间地震提高地面地震资料分辨率
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摘要
提高地面地震资料垂向分辨率一直是地震勘探的难点和热点。本文提出利用井间地震资料提高地面地震资料分辨率的一种新方法,即基于地层对地震波吸收的线性系统理论,建立关联低频地面地震与高频井间地震间多尺度地球物理信息的理论模型,再利用系统辨识技术估计地层对地震波吸收的系统特性,进而对地面地震资料实施补偿性高频恢复。应用该方法对精细地质模型不同分辨率的正演模拟资料及垦71井区实际井间及地面地震资料进行处理,结果表明在保持原地面地震资料主要特征参数的基础上,提高主频约10Hz,优势频带拓宽10～20Hz,取得了较好的地震资料优化效果。
Improving the vertical resolution of surface-seismic data is always the difficulty and hotpot of seismic exploration. The paper presented a new method improving the resolution of surface-seismic data by cross-hole seismic data,which is to create the theoretical model of multi-scale geophysical information related the low-frequency surface-seismic data to high-frequency cross-hole seismic data based on linear system theory of seismic waves absorbed by strata,then,the system feature of seismic waves absorbed by strata was assessed by using system recognition technique and the restoration for high-frequency compensation was further implemented to surface-seismic data. Using the method to carry out processing of forward simulation data with different resolution in fine geologic models and practical cross-hole seismic data and surface-seismic data in Ken-71 well zone showed that the dominant frequency was raised by about 10Hz and advantage band was broadened by 10~20Hz on the basis that retains the main characteristic parameters of original surface-seismic data,achieving better optimized results of seismic data.
Improving the vertical resolution of surface-seismic data is always the difficulty and hotpot of seismic exploration. The paper presented a new method improving the resolution of surface-seismic data by cross-hole seismic data,which is to create the theoretical model of multi-scale geophysical information related the low-frequency surface-seismic data to high-frequency cross-hole seismic data based on linear system theory of seismic waves absorbed by strata,then,the system feature of seismic waves absorbed by strata was assessed by using system recognition technique and the restoration for high-frequency compensation was further implemented to surface-seismic data. Using the method to carry out processing of forward simulation data with different resolution in fine geologic models and practical cross-hole seismic data and surface-seismic data in Ken-71 well zone showed that the dominant frequency was raised by about 10Hz and advantage band was broadened by 10~20Hz on the basis that retains the main characteristic parameters of original surface-seismic data,achieving better optimized results of seismic data.
引文
[1]杨云岭,韩文功.胜利油田高分辨率地震勘探方法与实践.北京:石油工业出版社,2002
[2]刘喜武,刘洪.地震盲反褶积综述.地球物理学进展,2003,18(2):203～209
[3]陆文凯,丁文龙等.基于信号子空间分解的三维地震资料高分辨率处理方法.地球物理学报,2005,48(4):896～901
[4]Gang Yu,Steve Hol man.High frequency restoration of land surface seismic data from China oilfields.CPS/SEG,Beijing,2004
[5]Chopra S,Alexeev V et al.High-frequency restora-tion of surface seismic data.The Leading Edge,2003,22
[6]曾锐,刘洪等.柯西约束盲反褶积技术在井间地震的应用.地球物理学进展,2004,19(1):166～172
[7]李庆忠,王建花.井间地震勘探的误区及出路.石油地球物理勘探,2004,39(1):1～11
[8]何惺华.对井间地震反射波的分析.石油物探,2006,45(5):520～526
[9]孔庆丰,王延光等.井间地震有限角度叠加方法研究和应用.石油地球物理勘探,2007,42(3):256～262
[10]孔庆丰,王延光等.垦71区块井间地震资料处理研究与应用.物探与化探,2008,32(2):175～179
[11]曹丹平,印兴耀等.井间地震资料精细解释方法研究和应用.地球物理学进展,2008,23(4):1209～1215
[12]刘浩杰,王延光.多尺度地球物理资料速度分析.油气地球物理,2006,4(4):19～22
[13]王延光,韩文功等.多尺度地球物理资料分析和匹配.石油地球物理勘探,2008,43(3):333～339
[14]刘浩杰,魏国华.井间地震资料谱分析及井地联合应用探讨.油气地质与采收率,2008,15(5):56～58
[15]Zadeh L A.From circuit theory to system theory.Proc IRE,1962,50(5):856～865
[16]Lennart Ljung.Black box model frominput output meas-urement.IEEE Instrumentation and Measurement Tech-nology Conference,Budapest,Hungary,2001:21～23
[17]王秀峰,卢桂章.系统建模与辨识.北京:电子工业出版社,2004
[2]刘喜武,刘洪.地震盲反褶积综述.地球物理学进展,2003,18(2):203～209
[3]陆文凯,丁文龙等.基于信号子空间分解的三维地震资料高分辨率处理方法.地球物理学报,2005,48(4):896～901
[4]Gang Yu,Steve Hol man.High frequency restoration of land surface seismic data from China oilfields.CPS/SEG,Beijing,2004
[5]Chopra S,Alexeev V et al.High-frequency restora-tion of surface seismic data.The Leading Edge,2003,22
[6]曾锐,刘洪等.柯西约束盲反褶积技术在井间地震的应用.地球物理学进展,2004,19(1):166～172
[7]李庆忠,王建花.井间地震勘探的误区及出路.石油地球物理勘探,2004,39(1):1～11
[8]何惺华.对井间地震反射波的分析.石油物探,2006,45(5):520～526
[9]孔庆丰,王延光等.井间地震有限角度叠加方法研究和应用.石油地球物理勘探,2007,42(3):256～262
[10]孔庆丰,王延光等.垦71区块井间地震资料处理研究与应用.物探与化探,2008,32(2):175～179
[11]曹丹平,印兴耀等.井间地震资料精细解释方法研究和应用.地球物理学进展,2008,23(4):1209～1215
[12]刘浩杰,王延光.多尺度地球物理资料速度分析.油气地球物理,2006,4(4):19～22
[13]王延光,韩文功等.多尺度地球物理资料分析和匹配.石油地球物理勘探,2008,43(3):333～339
[14]刘浩杰,魏国华.井间地震资料谱分析及井地联合应用探讨.油气地质与采收率,2008,15(5):56～58
[15]Zadeh L A.From circuit theory to system theory.Proc IRE,1962,50(5):856～865
[16]Lennart Ljung.Black box model frominput output meas-urement.IEEE Instrumentation and Measurement Tech-nology Conference,Budapest,Hungary,2001:21～23
[17]王秀峰,卢桂章.系统建模与辨识.北京:电子工业出版社,2004
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